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Parnassius apollo : ウィキペディア英語版
Apollo (butterfly)

The Apollo or Mountain Apollo (''Parnassius apollo''), is a butterfly of the Papilionidae family.
== Conservation ==

This species is of interest to entomologists due to the variety of subspecies, often only restricted to a specific valley in the Alps. The beautiful Apollo butterfly has long been prized by collectors, who aim to possess as many of the variants as possible. While over-collecting is believed to have caused populations to decline in some areas, such as in Spain and Italy, habitat change is thought to be a far more significant threat to this species’ survival.〔 Plantations of conifers, the succession of suitable habitat to scrubland, agriculture, and urbanization have all reduced the habitat of the Apollo butterfly. Climate change and acid rain have also been implicated in this species decline in Fennoscandia. In addition, motor vehicles have been cited as a cause of Apollo butterfly mortalities; vehicles on a motorway system near Bozen in South Tyrol, Italy, are said to have nearly wiped out a race of the Apollo.〔Collins, N.M. and Morris, M.G. (1985) Threatened Swallowtail Butterflies of the World. IUCN, Gland, Switzerland and Cambridge, UK.〕
In Finland, the Apollo was one of the first species of insects declared endangered. The Apollo population in Finland and Sweden decreased drastically during the 1950s. The reason for this is not known, but it is commonly thought to be because of a disease. In Sweden, it is now restricted to areas that have limestone in the ground, suggesting that the decrease could hypothetically be related to acid rain.
Laws exist to protect the Apollo butterfly in many countries. The Apollo is on the IUCN Red List of Threatened Animals, in Appendix II in CITES .〔〔 and is mentioned in annex IV of Habitats Directive. It is protected in other states: the Principality of Liechtenstein, Czech Republic (as critically threatened species in Czech code, Decree for implementation, No. 395/1992 Sb., and No. 175/2006 Sb.), Turkey and Poland.
However, these laws focus on the protection of individuals, rather than their habitat, and so may do little to mitigate the greatest threat that populations face.〔 Fortunately, there are a number of projects specifically working to save this Vulnerable insect. A conservation programme in Pieniny National Park saved a subspecies of the Apollo butterfly that had declined to just 20 individuals in the early 1990s, through a combination of captive breeding and habitat protection.〔Witkowsky, Z., Budzik, J. and Kosior, A. (1992) Restoration of the Apollo butterfly in Pieniny National Park. Chrońmy Przyrodę Ojczystą, 1992: 3-4.〕 In south-west Germany, conservationists are working with shepherds to ensure favourable conditions for the butterfly, which share their grassland habitat with sheep. For example, grazing periods have been shifted to avoid the Apollo butterfly larvae stage, which is vulnerable to being trampled.
The Apollo butterfly has many subspecies around the world, and some European subspecies are showing an alarming decline in numbers. This is mainly caused by habitat destruction, air pollution affecting the insect's food plants, and butterfly collectors. The Apollo butterfly is also more vulnerable to predators as it spends two years as a caterpillar.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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